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Cheap flights from Montreal to London Heathrow Airport from C$ 420

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — LHR
18 Feb — 25 Feb1
1 adult

The best prices from Montreal to London Heathrow are usually found in September or October, booked 76 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap flight deals from Montreal to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 February 2025.

Round-trip from

C$ 778

One-way from

C$ 420

Popular in

December

Cheapest in

September

Average price

C$ 1,025

Good round-trip deal

C$ 1,023 or less

Good one-way deal

C$ 1,029 or less
Air Canada
  • Air Canada
  • 19/3-26/3
  • 1 total stop
  • 18h 15m total
  • Montreal to London
4/3
  • 4/3
  • 2 total stops
  • 21h 50m total
  • Montreal to London
Highest demand for flights based on searches. 1% potential increase in price (C$ 30 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease (C$ 27 potential savings vs. average RT price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from Montreal (YMQ) to London Heathrow.
Price to beat on a one-way flight from Montreal (YMQ) to London Heathrow.

Find flight deals from Montreal to Heathrow

Cheapest flights from Montreal to Heathrow
Explore the most affordable flight options available from Montreal to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 February 2025.

Wed 19/38:15 p.m.YUL - LHR
Nonstop6h 55mAir Canada
Wed 26/38:55 a.m.LHR - YUL
1 stop11h 20mAir Canada
Deal found 13/2C$ 778
Fri 2/510:25 p.m.YUL - LHR
Nonstop6h 35mMultiple Airlines
Sat 17/56:50 a.m.LHR - YUL
1 stop9h 55mMultiple Airlines
Deal found 11/2C$ 816
Fri 9/510:25 p.m.YUL - LHR
Nonstop6h 35mLufthansa
Sat 31/59:30 a.m.LHR - YUL
Nonstop7h 10mLufthansa
Deal found 12/2C$ 832
Tue 6/54:40 p.m.YUL - LHR
2 stops13h 00mUnited Airlines
Tue 13/59:30 a.m.LHR - YUL
2 stops15h 15mUnited Airlines
Deal found 12/2C$ 906
Thu 13/37:35 p.m.YUL - LHR
1 stop14h 30mAustrian Airlines
Tue 18/37:25 p.m.LHR - YUL
1 stop23h 30mAustrian Airlines
Deal found 12/2C$ 925
Tue 3/69:15 p.m.YUL - LHR
2 stops14h 50mBrussels Airlines
Wed 11/66:50 a.m.LHR - YUL
1 stop9h 55mBrussels Airlines
Deal found 11/2C$ 955
Wed 9/45:00 p.m.YUL - LHR
1 stop10h 00mDelta
Wed 23/49:35 a.m.LHR - YUL
1 stop16h 51mDelta
Deal found 12/2C$ 962
Mon 24/28:50 p.m.YUL - LHR
Nonstop6h 50mBritish Airways
Tue 4/34:30 p.m.LHR - YUL
Nonstop7h 35mBritish Airways
Deal found 12/2C$ 1,029
Thu 24/410:05 p.m.YUL - LHR
Nonstop6h 40mAmerican Airlines
Tue 13/56:05 p.m.LHR - YUL
Nonstop7h 10mAmerican Airlines
Deal found 12/2C$ 1,039
Fri 14/25:00 p.m.YUL - LHR
1 stop20h 20mVirgin Atlantic
Sun 16/212:20 p.m.LHR - YUL
1 stop16h 02mVirgin Atlantic
Deal found 12/2C$ 1,041

Find flights from Montreal to Heathrow within your budget

Customize your flight search to find flights from Montreal to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 13 February 2025.

Fly from

Montreal

Fly to

Heathrow

Route

Depart

Return

Price

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 19/3

8:15 p.m.-7:10 a.m.

Nonstop6h 55m

London Heathrow

Wed 26/3

8:55 a.m.-4:15 p.m.

1 stop11h 20m

C$ 778

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Fri 2/5

10:25 p.m.-10:00 a.m.

Nonstop6h 35m

London Heathrow

Sat 17/5

6:50 a.m.-11:45 a.m.

1 stop9h 55m

C$ 816

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Fri 9/5

10:25 p.m.-10:00 a.m.

Nonstop6h 35m

London Heathrow

Fri 30/5

9:30 a.m.-11:40 a.m.

Nonstop7h 10m

C$ 832

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 6/5

8:10 a.m.-10:40 a.m.

2 stops21h 30m

London Heathrow

Tue 13/5

9:30 a.m.-4:58 p.m.

1 stop12h 28m

C$ 906

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 13/3

7:35 p.m.-2:05 p.m.

1 stop14h 30m

London Heathrow

Tue 18/3

7:25 p.m.-2:55 p.m.

1 stop23h 30m

C$ 925

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 3/6

9:15 p.m.-5:05 p.m.

2 stops14h 50m

London Heathrow

Fri 13/6

6:50 a.m.-11:45 a.m.

1 stop9h 55m

C$ 955

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 9/4

5:00 p.m.-8:00 a.m.

1 stop10h 00m

London Heathrow

Wed 23/4

9:35 a.m.-9:26 p.m.

1 stop16h 51m

C$ 962

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 1/4

6:50 p.m.-7:25 p.m.

1 stop19h 35m

London Heathrow

Tue 15/4

7:15 p.m.-4:55 p.m.

1 stop26h 40m

C$ 999

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 24/2

8:50 p.m.-8:40 a.m.

Nonstop6h 50m

London Heathrow

Tue 4/3

4:30 p.m.-7:05 p.m.

Nonstop7h 35m

C$ 1,029

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 24/4

10:05 p.m.-9:45 a.m.

Nonstop6h 40m

London Heathrow

Tue 13/5

6:05 p.m.-8:15 p.m.

Nonstop7h 10m

C$ 1,039

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/2

Showing 1-10 of 19 results
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Best time to book a flight from Montreal to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Montreal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Montreal to Heathrow

Get recent, data-driven insights about flights from Montreal to Heathrow including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Montreal to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Montreal to Heathrow. Price data was last updated on 7 February 2025.

The price you pay for your flight from Montreal to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Montreal to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Montreal to London Heathrow Airport (average of C$ 560). Flying from Montreal to London Heathrow Airport in July is currently the most expensive (average of C$ 874). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YMQ to LHR?

Find hourly flight availability from Montreal to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 February 2025.

When flying from Montreal to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 35% versus a flight in the evening.

What is the cheapest day to fly from Montreal to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Montreal to Heathrow. Price data was last updated on 15 September 2024.

Travelers seeking maximum savings on their Montreal to London Heathrow Airport flight should consider departing on Sunday mornings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Montreal to London Heathrow Airport

Explore weekly flight availability from Montreal to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 13 February 2025.

The most flights from YMQ to LHR are scheduled on a Monday (11 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (10 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 13 February 2025.
Peruse reviews from past customers who have flown with Delta, Finnair and Austrian Airlines from Montreal to London to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very good

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding